Last year picked up an engine in a hurry sold as a allegedly rebuilt Mercruiser 165. turned out to be a 235 ci engine. I swapped engines to get the season in. Propped down,dealt with some overheating issues and made it through the entire boating season April through December. Not happy with the loss of power in a already underpowered boat so I found a recently rebuilt Chevy 250 that came out of a Nova with good compression. The question is ..do i have to change the cam? I am aware of the wrong cams causing water ingestion but vaguely remember something about the 250 . That the cam in a stock 250 may not need to be changed.
Also... will be removing the head to replace the head gasket because I don't know if marine was used. Should this engine not be used if it was over bored more than spec in the service manual? Or should I place fresh water cooling system on the engine to prevent corrosion/cooling problems down the line.
Also... will be removing the head to replace the head gasket because I don't know if marine was used. Should this engine not be used if it was over bored more than spec in the service manual? Or should I place fresh water cooling system on the engine to prevent corrosion/cooling problems down the line.
